[K-9] Advanced Device-based Circuits and Power Management Systems

[K-9-04] A 24V-to-1V On-Chip Switch Dual-Charging Path Dual-Inductor Hybrid Converter Achieving Improved Load Transient Response

〇Kazuya Nishijima¹, Toma Umeki¹, Kousuke Miyaji¹ (1. Shinshu University (Japan))

Presentation style: Online

https://doi.org/10.7567/SSDM.2022.K-9-04

This paper proposes a dual-charging path dual-inductor hybrid (DCP-DIH) converter that can charge two inductors simultaneously to improve load transient response. The proposed scheme only introduces a single additional switch and capacitor to form dual charging paths during load transient response. All power switches are integrated using 5V transistors with 0.25μm HV BCD process. Simulation results show that the proposed circuit achieves 8.7% recovery time and 12.9% voltage drop reduction compared to the conventional DIH converter at 20mA to 4A load transient step.